CN220290477U - High-altitude anti-interference extremely-cold-resistant variable frequency cable - Google Patents
High-altitude anti-interference extremely-cold-resistant variable frequency cable Download PDFInfo
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- CN220290477U CN220290477U CN202321881802.9U CN202321881802U CN220290477U CN 220290477 U CN220290477 U CN 220290477U CN 202321881802 U CN202321881802 U CN 202321881802U CN 220290477 U CN220290477 U CN 220290477U
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- resistant
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- 239000004020 conductor Substances 0.000 claims abstract description 19
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000010949 copper Substances 0.000 claims abstract description 11
- 229910052802 copper Inorganic materials 0.000 claims abstract description 11
- 229910001335 Galvanized steel Inorganic materials 0.000 claims abstract description 9
- 239000008397 galvanized steel Substances 0.000 claims abstract description 9
- 238000002955 isolation Methods 0.000 claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 7
- 239000010410 layer Substances 0.000 claims description 100
- 239000000463 material Substances 0.000 claims description 14
- 229920000098 polyolefin Polymers 0.000 claims description 8
- 239000011241 protective layer Substances 0.000 claims description 5
- 238000009954 braiding Methods 0.000 claims description 3
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 3
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 230000002401 inhibitory effect Effects 0.000 abstract description 7
- 230000007935 neutral effect Effects 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000003063 flame retardant Substances 0.000 description 3
- 230000005670 electromagnetic radiation Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The utility model discloses a high-altitude anti-interference and extremely-cold-resistant variable-frequency cable, which belongs to the technical field of cables and comprises a conductor, wherein an insulating layer is coated outside the conductor, an insulating wire core is formed by the conductor and the insulating layer, an aluminum strip is longitudinally coated on the outer layer of the insulating wire core to serve as a wire core waterproof shielding layer, two layers of wrapping shielding layers are overlapped outside the cable core, gaps between the insulating wire core and three zero wire cores are filled with non-hygroscopic low-temperature-resistant filling films to serve as filling layers, copper wires are woven outside the wrapping shielding layers to serve as woven shielding layers, an isolation sleeve is extruded outside the woven shielding layers, steel wires and galvanized steel strips are adopted outside the isolation sleeve to serve as double-layer armor layers, electromagnetic induction resistance, poor grounding and power wire conduction interference can be improved by adopting multi-layer shielding, inductance is reduced, induced electromotive force is prevented from being too large, the shielding layers play a role in inhibiting electromagnetic wave external emission, and can serve as a channel of short-circuit current, and a role in protecting a neutral wire core.
Description
Technical Field
The utility model relates to the technical field of cables, in particular to a high-altitude anti-interference extremely-cold-resistant variable frequency cable.
Background
In western regions, the requirements on the installation and laying of wires and cables, the power transmission stability and the energy conversion rate of equipment in operation and other aspects are higher and higher in most other severe environments such as mountains, extremely cold and the like;
a cold-resistant power cable disclosed in patent application number CN205789217U comprises a plurality of identical and intertwined cable cores, a filler, a flame-retardant wrapping tape, armor and a cold-resistant sheath; the flame-retardant wrapping tape is wound on the outer surface of the cable core, the armor package is arranged on the outer surface of the flame-retardant wrapping tape, and the cold-resistant sheath package is arranged on the outer surface of the armor; the cable core consists of a conductor bundle and an insulating layer coated on the outer surface of the conductor bundle;
in the practical application process, because the temperature difference between day and night in the high-altitude area is large, the water vapor is large, the sunlight ultraviolet rays are strong, the reliability of the cold-resistant cable is not strong, the service life of the cable is very short, and the main reason is that the moisture influences the electric performance on the penetration of insulation and sheath materials, and the ultraviolet rays and the large temperature difference also cause the accelerated aging of the sheath and the insulation of the cable, so that the power cable can not meet the requirements under the high-altitude extremely cold condition, and the high-altitude anti-interference extremely cold-resistant variable frequency cable needs to be developed to meet the requirements of markets and customers.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description summary and in the title of the application, to avoid obscuring the purpose of this section, the description summary and the title of the utility model, which should not be used to limit the scope of the utility model.
Therefore, the utility model aims to provide the variable frequency cable for high-altitude anti-interference and extremely cold resistance, which adopts multilayer shielding to improve electromagnetic induction resistance, poor grounding and conductive interference of a power line, reduce inductance and prevent overlarge induced electromotive force, and a shielding layer not only plays a role in inhibiting electromagnetic wave from externally emitting, but also can serve as a channel of short-circuit current, can play a role in protecting a neutral wire core, can meet the compression resistance and tensile property of the cable by adopting a double-layer armor mode, can also meet the normal laying and safe use of the cable under various complex environments of construction sites in high-altitude areas, and adopts extremely cold resistant insulating materials and extremely cold resistant sheath materials to ensure the normal operation, use and storage of the cable under extremely cold conditions in high-altitude areas.
In order to solve the technical problems, according to one aspect of the present utility model, the following technical solutions are provided:
a high-altitude anti-interference extremely-cold-resistant variable frequency cable, which comprises:
the conductor is coated with an insulating layer, and the conductor and the insulating layer form an insulating wire core;
an aluminum strip is longitudinally wrapped on the outer layer of the insulated wire core to serve as a wire core waterproof shielding layer, the wire core waterproof shielding layer serves as a cable core, two layers of wrapping shielding layers are overlapped and wrapped outside the cable core, gaps between the insulated wire core and the three zero wire cores are filled with non-hygroscopic low-temperature-resistant filling films to serve as filling layers, copper wires are woven outside the wrapping shielding layers to serve as woven shielding layers, and a layer of isolation sleeve is extruded outside the woven shielding layers;
the isolating sleeve is used as an inner protective layer, galvanized steel wires and galvanized steel strips are adopted as double-layer armor outside the isolating sleeve, and the outer protective layer made of the extremely cold-resistant polyolefin material is coated outside the double-layer armor.
As a preferable scheme of the high-altitude anti-interference extremely-cold-resistant variable frequency cable, the utility model comprises the following steps: the conductor is a special-shaped structure copper wire drawn by an oxygen-free copper rod with excellent electrical performance, and is stranded and molded by a custom mold.
As a preferable scheme of the high-altitude anti-interference extremely-cold-resistant variable frequency cable, the utility model comprises the following steps: the insulating layer is made of an extremely cold resistant cross-linked polyethylene material, the wrapping shielding layer is formed by matching a polyester belt with a copper belt, and the isolation sleeve is made of an extremely cold resistant polyolefin material.
As a preferable scheme of the high-altitude anti-interference extremely-cold-resistant variable frequency cable, the utility model comprises the following steps: the waterproof shielding layer of the wire core adopts a layer of aluminum tape which is longitudinally wrapped and welded as the waterproof shielding layer.
As a preferable scheme of the high-altitude anti-interference extremely-cold-resistant variable frequency cable, the utility model comprises the following steps: the waterproof shielding layer, the wrapping shielding layer and the braiding shielding layer of the wire core adopt a plurality of shielding layers so as to improve electromagnetic induction resistance, poor grounding and power line conduction interference resistance.
Compared with the prior art:
1. the adoption of the oxygen-free high-quality solid copper conductor improves the conductor compression coefficient of the cable from 0.87 to 0.99, and improves the equivalent resistivity;
2. the adoption of the multi-layer shielding can improve electromagnetic induction resistance, poor grounding and power line conduction interference, reduce inductance and prevent overlarge induced electromotive force. The shielding layer not only plays a role in inhibiting electromagnetic waves from being emitted outwards, but also can serve as a channel of short-circuit current, and can play a role in protecting a neutral wire core;
3. the symmetrical cable structure has better electromagnetic compatibility due to the interchangeability of the wires, plays a certain role in inhibiting electromagnetic interference, can offset odd frequencies in higher harmonics, improves the anti-interference performance of the special cable of the variable frequency motor, and reduces electromagnetic radiation in the whole system.
4. An aluminum strip layer is longitudinally wrapped and welded outside the insulating layer to serve as a waterproof shielding layer, so that the waterproof shielding layer can play a role in both waterproof and shielding;
5. the double-layer armor mode is adopted to meet the compression resistance and tensile resistance of the cable, and the normal laying and safe use of the cable in various complex environments of construction sites in high-altitude areas can be met;
6. the adoption of the extremely cold resistant insulating material and the extremely cold resistant sheath material ensures the normal operation and storage of the cable under extremely cold weather in high altitude areas.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following detailed description of the embodiments of the present utility model will be given with reference to the accompanying drawings, which are to be understood as merely some embodiments of the present utility model, and from which other drawings can be obtained by those skilled in the art without inventive faculty. Wherein:
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic cross-sectional structure of the present utility model.
In the figure: 1. a main and auxiliary special-shaped compressed conductor; 2. an insulating layer; 3. a waterproof shielding layer of the wire core; 4. a filling layer; 5. wrapping the shielding layer; 6. braiding a shielding layer; 7. a spacer sleeve; 8. a double layer armor layer; 9. and an outer protective layer.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed below.
Next, the present utility model will be described in detail with reference to the drawings, wherein the sectional view of the device structure is not partially enlarged to general scale for the convenience of description, and the drawings are only examples, which should not limit the scope of the present utility model. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.
The utility model provides a high-altitude anti-interference extremely-cold-resistant variable frequency cable, referring to fig. 1-2, which comprises a conductor 1, wherein an insulating layer 2 is coated outside the conductor 1, and an insulating wire core is formed by the conductor 1 and the insulating layer 2;
an aluminum strip is longitudinally wrapped on the outer layer of the insulated wire core to serve as a wire core waterproof shielding layer 3, the wire core waterproof shielding layer 3 serves as a cable to be twisted into a cable core, two layers of wrapping shielding layers 5 are overlapped and wrapped outside the cable core, gaps between the insulated wire core and three zero wire cores are filled with non-hygroscopic low-temperature-resistant filling films to serve as filling layers 4, copper wires are woven outside the wrapping shielding layers 5 to serve as woven shielding layers 6, and a layer of isolation sleeve 7 is extruded outside the woven shielding layers;
the isolation sleeve 7 is used as an inner protection layer, the isolation sleeve 7 is externally provided with a galvanized steel wire and a galvanized steel belt double-layer armor as a double-layer armor layer 8, the double-layer armor layer 8 is provided with the galvanized steel wire and the galvanized steel belt double-layer armor so as to meet the compression resistance and the tensile resistance of the cable, and the normal laying and the safe use of the cable in various complex environments of a construction site in a high altitude area can be met, and the outer protection layer 9 made of an extremely cold-resistant polyolefin material is coated outside the double-layer armor layer 8;
the symmetrical cable structure is adopted, because of the interchangeability of wires, the symmetrical cable structure has better electromagnetic compatibility, plays a certain role in inhibiting electromagnetic interference, can offset odd frequency in higher order harmonic, improves the anti-interference performance of the special cable for the variable frequency motor, reduces electromagnetic radiation in the whole system, adopts the insulating layer 2 and the non-hygroscopic low-temperature-resistant filling film as the filling 4, adopts the extremely cold-resistant polyolefin material as the isolation sleeve 7 and adopts the extremely cold-resistant polyolefin material as the outer protection layer 9 except the metal material, and ensures the normal operation of the cable under the extremely cold condition.
With continued reference to fig. 1, the conductor 1 is a copper wire with a special-shaped structure drawn by an oxygen-free copper rod and excellent in electrical performance, and is twisted and molded by a custom-made die, so that the compression coefficient of the conductor of the cable is improved from 0.87 to 0.99, and the equivalent resistivity is improved.
With continued reference to fig. 1, the insulating layer 2 is made of a cross-linked polyethylene material with polar cold resistance, the wrapping shielding layer 5 is formed by matching a polyester belt with a copper belt, and the isolating sleeve 7 is made of a polar cold resistant polyolefin material
With continued reference to fig. 1, the core waterproof shielding layer 3 adopts a layer of aluminum tape longitudinally wrapped and welded as a waterproof shielding layer, which can play a role in both waterproof and shielding.
With continued reference to fig. 1, the waterproof core shielding layer 3, the wrapping shielding layer 5 and the braided shielding layer 6 are made of multiple shielding layers, so that electromagnetic induction resistance, poor grounding and power line conduction interference are improved, inductance is reduced, and excessive induced electromotive force is prevented. The shielding layer not only plays a role in inhibiting electromagnetic waves from being emitted outwards, but also can serve as a channel of short-circuit current, and can play a role in protecting a neutral wire core.
Working principle: when the cable is used, the multilayer shielding is adopted, electromagnetic induction resistance, poor grounding and power line conduction interference can be improved, inductance is reduced, induced electromotive force is prevented from being overlarge, the shielding layer not only plays a role in inhibiting electromagnetic wave external emission, but also can serve as a channel of short-circuit current, and can play a role in protecting a neutral wire core.
Although the utility model has been described hereinabove with reference to embodiments, various modifications thereof may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the features of the disclosed embodiments may be combined with each other in any manner as long as there is no structural conflict, and the exhaustive description of these combinations is not given in this specification merely for the sake of omitting the descriptions and saving resources. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (5)
1. The utility model provides a high-altitude anti-interference extremely cold resistant variable frequency cable that uses which characterized in that includes:
the conductor (1) is coated with an insulating layer (2), and the conductor (1) and the insulating layer (2) form an insulating wire core;
an aluminum strip is longitudinally wrapped on the outer layer of the insulated wire core to serve as a wire core waterproof shielding layer (3), the wire core waterproof shielding layer (3) serves as a cable to be twisted into a cable core, two layers of wrapping shielding layers (5) are overlapped and wrapped outside the cable core, gaps between the insulated wire core and the three zero wire cores are filled with non-hygroscopic low-temperature-resistant filling films to serve as filling layers (4), copper wires are woven outside the wrapping shielding layers (5) to serve as woven shielding layers (6), and a layer of isolation sleeve (7) is extruded outside the woven shielding layers;
the isolating sleeve (7) is used as an inner protective layer, galvanized steel wires and galvanized steel strips are adopted as double-layer armor layers (8) outside the isolating sleeve (7), and an outer protective layer (9) made of an extremely cold-resistant polyolefin material is coated outside the double-layer armor layers (8).
2. The high-altitude anti-interference extremely-cold-resistant variable frequency cable according to claim 1, wherein the conductor (1) is a special-shaped structure copper wire drawn by an oxygen-free copper rod with excellent electrical performance, and is formed by twisting through a custom mold.
3. The high-altitude anti-interference extremely-cold-resistant variable frequency cable according to claim 1, wherein the insulating layer (2) is made of an extremely-cold-resistant cross-linked polyethylene material, the wrapping shielding layer (5) is formed by matching a polyester belt with a copper belt, and the isolating sleeve (7) is made of an extremely-cold-resistant polyolefin material.
4. The high-altitude anti-interference extremely-cold-resistant variable frequency cable according to claim 1, wherein the wire core waterproof shielding layer (3) adopts a layer of aluminum tape longitudinally wrapped and welded as a waterproof shielding layer.
5. The high-altitude anti-interference and extremely-cold-resistant variable frequency cable according to claim 1, wherein the waterproof wire core shielding layer (3), the wrapping shielding layer (5) and the braiding shielding layer (6) adopt a plurality of shielding layers to improve electromagnetic induction resistance, poor grounding and power line conduction interference resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321881802.9U CN220290477U (en) | 2023-07-18 | 2023-07-18 | High-altitude anti-interference extremely-cold-resistant variable frequency cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321881802.9U CN220290477U (en) | 2023-07-18 | 2023-07-18 | High-altitude anti-interference extremely-cold-resistant variable frequency cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220290477U true CN220290477U (en) | 2024-01-02 |
Family
ID=89325513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321881802.9U Active CN220290477U (en) | 2023-07-18 | 2023-07-18 | High-altitude anti-interference extremely-cold-resistant variable frequency cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220290477U (en) |
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2023
- 2023-07-18 CN CN202321881802.9U patent/CN220290477U/en active Active
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